@ Alchemy- Your question about sulfites in organic foods is a tricky one. The USDA regulates organic labeling, and has three tiers of "organic".
Certified organic must contain 100 percent organic ingredients besides water and salt. Manufacturers must produce and grow certified organic foods at facilities that hold USDA certifications.
Foods manufacturers label organic must contain 95% organic materials and no added sulfites. Manufacturers can use sulfites to process the other five percent of ingredients, as long as the manufacturer does not add the ingredients to the product as a preservative.
For the USDA to consider a product organically made, the product must contain 70 percent organic product. Besides the percentage of organic products, requirements are the same as "organic" products. These products can contain things like caramel color, which use sulfites in their production.